John l



(No Model.)

J. L. NOLL.

.A18 BLOWER.,

No. 808,878. Patented Aug. 18,1884.

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UNITED STATES PATnNT Orrrcn.

JOHN L. NOLL, OF BROOKLYN, NEW YORK.

AIR-BLOWER.

SPECIFICATION forming part of Letters Patent No. 303,878, dated August19, 1884.

Application tiled March 2G, 1884.

.To @ZZ whom, it may concern:

3e it known that I, JOHN L. NULL, of Brooklyn, county of Kings, andState of N ew York, have invented certain new and useful improvements inAAir-Blowers, of which the following is a specification.

This invention has reference to an improved air-blower which is to beused in the arts in place of bellows, said blower forming a handy andconvenient device for removing dust and other sediments.

ln the accompanying drawings, Figure 1 represents a verticallongitudinal section of my improved air-blower. Fig. 2 is a gferticaltransverse section on line c m, Fig. 1.u Fig. 3

v.is a detail section of the piston, and 4 a vertical transverse sectionon line y y, Fig. 1.

Similar letters of reference indicate corresponding parts.

A in the drawings represents the barrel of my improved air-blower, whichbarrel is made ot' one continuous piece of veneer, which is formed bywrapping it around around block, the layers being glued together andallowed to dry while on theblock. The nozzle Band head C are preferablymade of wood and glued or otherwise secured into the ends of the barrelA. The nozzle B is provided with a central perforation that Vis wider atits base or inner end, and which gradually diininishesin width towardthe outer end of the nozzle, so as to provide a smooth exit-channel forthe air without any obstructing corners or projections. rl'he head C isalso provided with a central funnel-shaped opening, and with lateralair-holes a a. The piston-rod D is guided by a packing, b, of thecentral perforation of the head C, which packing facilitates the motionof the piston-rod. The piston-rod D is provided with an exterior handle,D". rlhe piston D is provided with openings l (l and nap-valves d d', ofleather or other suitable material. The circumference of the piston isbeveled and provided with a leather or other packing, c, having a skivededge. The circumferential recess of the piston and the (No model.)

skived packing form a hind of pocket in which the air gathers during theforward motion of the piston, so that it acts in the nature of an airpacking or cushion for the leather packing, and produces a tight andeffective packing during the compressing1 action ot' the piston.

The operation of my improved air-blower is as follows: W'hen the pistonis drawn back, the flap-valves open, so that the piston moves withoutsuction, while the air in the barrel escapes freely through the lateralopenings in the head C, which enables the piston to bc drawn backquickly. During the forward motion of the piston, the air in the barrelat the front of the saine is compressed by the tight packing of thepiston and forced ont through the nozzle to the point where the currentof air is to be applied. As the air enters freely during the forwardmotion ot the piston through the holes (La, no suction or other impedingaction is exerted on the piston. The flap-valves d close the openings dof the piston, while the air-pressure forces the packing tightly againstthe inner surface of the barrel.

Having thus described my invention. l claim as new and desire te secureby Letters Patent- The combination of a barrel, A, anozzle, B, attachedto one end of said barrel, a head, (l, attached to the opposite end ofsaid barrel and provided with a central opening and lateral air-openingsa, a piston-rod, D', which passes through said central opening, and avalved piston, D, fixed to the inner end of said piston-1 od, beveled atits circumference, and provided with a circumferential flexible band orpacking having a skived edge, substantially as described.

In testimony that l claim the foregoing as my invention l have signed mynaine in presence of two subscribing witnesses.

JOHN L. NOLL.

Vitnesses:

LoUIs C. Maenner, Sinner MANN.

